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Once a transform produces the columns you want (see Transforming panel data), the Build tab’s visualization settings map those columns onto the chart. Different chart types read different mappings.

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Which mapping each chart type uses

Transform output columns always appear in these pickers after the raw table columns — scroll to the bottom of the list.

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Walkthrough: bar chart from an unnested array

This continues the cell_idx / cell_voltage transform from the previous page.
1

Set the visualization type

In the Build tab, set Visualization to Bar chart.
2

Open the X axis columns picker

Click into X axis columns. Raw table columns are listed first; transform outputs (cell_idx, cell_voltage, …) are at the bottom.
3

Map X and Y to the transform output

Uncheck the default raw column, check cell_idx for X. Do the same for Y axis columns, selecting cell_voltage.
4

Check the live preview

Scroll down — the Preview pane renders against your actual data as soon as both axes are mapped.
5

Save

Click Create Panel (or Save on an existing panel).

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Walkthrough: gauge / stat from an aggregated value

Gauge and Stat/KPI panels show a single number, so your transform should produce exactly one row with one numeric column.
1

Write a single-value transform

Alias your output column to value — it’s the field the gauge falls back to by default:
2

Set the visualization type

Set Visualization to Gauge (or Stat / KPI).
3

Set the Measure

Set Measure to your transform’s output column (value, or whatever you aliased it to).
4

Set Min/Max Display

Under Gauge settings, set Min Display / Max Display to a range that fits your metric — the defaults (0–100) suit a percentage, not a raw voltage or count. For a 0–100% SoC value, the defaults are already correct.
There’s a known picker issue where selecting a transform-output column as Measure on a Gauge/Stat panel can snap back to a raw column instead of holding your selection — which then renders as 0 because that raw column doesn’t exist in the transformed row. If this happens after following the steps above, see Troubleshooting: gauge or stat shows 0 for the current workaround.

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Next step

Troubleshooting

Panel shows “No data”, a chart reads 0, or a transform column won’t map.